Patents by Inventor Bruce W. DOWNING

Bruce W. DOWNING has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Recovery of cesium from epithermal mineral deposits
    Patent number: 10738370
    Abstract: Hydrometallurgical processes are provided for the recovery of metal values, including cesium, from epithermal mineral deposits, including pharmacosiderite-containing ores. Aspects of the process involve the preferential formation of a cesium alum, and preparation of cesium hydroxide from the cesium alum.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: August 11, 2020
    Assignee: Cascadero Copper Corporation
    Inventors: Mohammad Mokmeli, David Dreisinger, David L. Trueman, Bruce W. Downing, Bill McWilliam
  • RECOVERY OF CESIUM FROM EPITHERMAL MINERAL DEPOSITS
    Publication number: 20190048437
    Abstract: Hydrometallurgical processes are provided for the recovery of metal values, including cesium, from epithermal mineral deposits, including pharmacosiderite-containing ores. Aspects of the process involve the preferential formation of a cesium alum, and preparation of cesium hydroxide from the cesium alum.
    Type: Application
    Filed: January 27, 2017
    Publication date: February 14, 2019
    Inventors: Mohammad MOKMELI, David DREISINGER, David L. TRUEMAN, Bruce W. DOWNING, Bill McWILLIAM